Bushing puller



June 30, 1931. w. R. RODZIKINAS 1,311,968

BUSHING FULLER Filed June 26 1930 v 2 v z z? 22- W RD dzz'kinas Patented June 30, 1931 UNITED STATES WALLACE 2B,. RODZIKINAS, or HATLEY, WISCONSIN BUSHING FULLER,

Application filed June 26, 1930. Serial No.464,082.

This invention relates to tools for removing bushings and the like from their bearings and has for an object to provide a tool haying jaws and'a manually operatable wedge be- 5 tween the jaws, said jaws being externally equipped with threads adapted to bite into the bushing and resist both longitudinal withdrawal and twisting of the jaws independently of the bushing. A

A further object of the invention is to provide a tool having the wedge for operating the jaws equipped with a collar having wrench faces whereby the tool may be given an initial twist with a wrench to facilitate l5 loosening of the bushing in its bearing when struck in order to promote subsequent easy withdrawal of the bushing. 1

A still further object of the invention is to provide a tool having the jaws normally a spring pressed apart, one of the springs being a spiral spring disposed on the flat outer ends of the jaws whereby the wrench collar may contact with said fiat faces within the inner convolution of the spiral spring and. limit forward movement of the wedge between the jaws so that the tool may occupy minimum space when not in use and at the same time breakage of the spring on the leading ends of the jaws will be positively prevented. With the above and other objects in view the invention consists in certain novel details of construction and combinations of parts hereinafter fully describedand claimed, it being understood that various modifications may be resorted to within the scope of the appended claims without departing from the spirit or sacrificing any ofthe advantages of the invention.

In the accompanying drawings forming part of this specification v .-.Figure 1 is aside elevation of my improved tool,

Fig. 2 is a longitudinal sectional ,view

- a through the tool, 1

. Fig. 3 is a cross sectional view taken on the line 133 of Fig. 1, l V

Fig. 4; is a cross sectional view taken on the line 44 ofFig. 2.7

Referring'now to the drawingsin which like characters of reference designate similar parts in the various views, the tool is shown to comprise spaced jaws 10, the same having semi-cylindrical outer faces, as best shown in Figs. 3 and 4. The jaws are provided with flat inner faces which are inclined obliquely with respect to the longitudinal axis of the tool.

The outer faces of both jaws are preferably provided for a portion thereof adjacent to 5 the leading ends of the jaws with longitudinal threads 11. The outer faces of the jaws are also provided adjacent to the rear ends thereof with threads 12 which are disposed obliquely to the longitudinal axis of the tool. '6

The leading .ends of the aws are rounded,

as shown at 13, to facilitate easy entry of the jaws into the bore "of a bushing. The rear ends of the jawsterminate in'flat aligned faces 14 which are disposed transversely of 7 the longitudinal axis of the tool. The jaws are preferably formed of steel, but may be formed of any desired material.

I Disposed between the jaws is a wedge 15 which is less in length than the length of the jaws and it is also preferably formed of steel, although it may be formed of other 7 material. The sides of the wedge engage the flatinclined inner faces of the jaws and when the wedge is manually moved outwardly, the "so jaws willbe spread apart to bind in the bore of the bushing. -When the tool is thus wedged in the bushing, the longitudinal Y threads 11 of the aws resist twisting of the tool'independentlyof the vbushing when the 85 tool is initially twisted to loosen the bushing, 1 as will be presently described, while the oblique threads of thejaws resist longitudinal slipping of the tool from the bushing.

It is of course understood that the Wedger-QO causes said threads to bite into the soft material of the bushing and firmly anchor the tool in the bushing.

For manipulating the wedge a metal rod 16 is welded or otherwise integrally secured to the rear end of the wedge. The rod is equipped with a swiveled handle 17 disposed transversely of the rod. The rod is furthermore equipped with an integral collar 18 having wrench faces 19 which permit the application of a wrench to permit of the tool being given an initial twist in a stuck bushing in order to loosen the bushing in much the same manner that a cork is initially twisted in the neck of a bottle to permit of its easy withdrawal.

A helical spring 20 is connected to the leading ends of the jaws, and a spiral spring 21 is connected to the rear ends of the j aws, both springs coacting in yieldably holding the jaws spread apart. The springs yield to pemit of the jaws being moved together when the wedge is pushed forwardly therebetween so that the jaws may be easily inserted in bushings of various diameters. It will be. here observed that the collar 18 will engage the flat aligned rear faces 14 of the jaws within the inner convolution of the spiral spring 21 when the wedge is thrust forwardly between the jaws and will prevent the wedge striking against the helical spring 20 and breaking the latter.

It will be observed that the jaws are cored out or formed with a circular opening 27 to receive the rod 16 and that this opening is of less diameter than the diameter of the collar 18. Furthermore, the jaws are provided with longitudinal slots 22, best shown in Figs. 2 and 4. A pin 25 is passed through the wedge and slidably fitted in the slots 22. The pin is headed up, as shown at 26, to prevent dislodginent thereof and serves as a means for connecting the jaws to the wedge.

In operation the wedge 15 is pushed forwardly between the jaws and then the aws are thrust into the bore of the bushing or pipe or other tubular device to be withdrawn from its bearing or seat. The rounded ends 13 permit easy entry of the jaws and the s rings 20 and 21 expand the. jaws to snugly fill in the bore of the bushing. The handle is now jerked outwardly to cause the wedge to spread the jaws apart and cause the threads of the jaws to bite into the soft material of the bushing. A wrench may now be applied to the collar 18 in case. the bushing is stuck and the tool thereby may be twisted to loosen the bushing, the longitudinal threads 14 preventing independent rotation of the jaws and the bushing during this loosening operation. The handle may now be grasped and the tool pulled outwardly carrying with it the bushing, it being obvious that the oblique threads 12 positively prevent slipping of the tool in the bushing during such withdrawal.

Having thus described the invention, I claim:

1. A tool for removing bushings and the like comprising jaws having semi-cylindrical outer faces and having flat inner faces inclined with respect to the longitudinal axis of the tool, said outer faces having an obliquely threaded portion and a longitudinally threaded portion, the leading ends of the jaws being rounded to permit easy entry of the tool inthe bore of the bushing, and a wedge movable longitudinally between the flat inclined faces of the jaws to wedge the jaws in the bushing.

2. A tool for removing bushings and the like comprising jaws adapted to enter the bore of the bushing, springs on opposite ends of the jaws for holding the jaws yieldably spread apart, a wedge between the jaws movable longitudinally of the axis of the tool to expand the jaws, said jaws having threaded exterior portions adapted to bite into the bushing to permit the bushing being initially twisted to facilitate easy withdrawal from its bearing, and means for actuating the wedge to manipulate the jaws.

3. A tool for removing bushings and the like comprising a rod having a swiveled han dle, a collar integral with the rod and having wrench faces, a wedge integral with the rod, spring pressed jaws on opposite sides of the wedge, and a pin connecting the jaws and the wedge, said jaws terminating in rounded leading ends to permit easy entry of the jaws into the bore of the bushing, said jaws having external obliquely disposed threads to bite into the bushing and resist longitudinal slipping of the jaws and having longitudinally disposed threads to bite into 'the bushing and resist twisting of the jaws independently of the bushing.

4;. A tool for removing bushings and the like comprising jaws having semi-cylindrical. outer faces and having flat inner faces inclined with respect to the longitudinal axis of the tool, said outer faces having an obliquely threaded portion and a longitudinally threaded portion, the leading ends of the jaws being rounded to permit easy entry of the tool in the bore of the bushing, a rod having a transversely disposed handle,a collar integral with the rod having wrench faces, a wedge between the jaws integral with the rod and engaging the flat inclined faces of the jaws, and a pin connecting the j aws-and the wedge.

5. A tool for removing bushings and the like comprising spaced jaws, a wedge between the jaws for spreading the jaws apart, said jaws remote from their leading ends having flat faces disposed in alignment transversely of the longitudinal axis of the tool,

a spiral spring on said fiat faces for yield-' ably holding the jaws spread apart, a rod integral with the wedge for manipulating the wedge, a collar integral with the rod and having wrench faces to permit application of a wrench for twisting the tool, said collar being adapted to engage said flat aligned faces of the jaws within the inner convolution of said spiral spring and limit forward movement of the Wedge between the jaws, and a pin connecting the jaws and the wedge.

In testimony whereof I aflix my signature.

WALLACE R. RODZIKINAS. [L. 5.] 

